Question

a book with the mass of 1 kg is sliding to the left on a table. if the frictional force on the book is 5 N , calculate the books acceleration.is it speeding up or slowing down

Answer 1

The book has an acceleration of 5 m/s² to the right and is slowing down because the frictional force acts against its motion.

Step-by-step explanation:

To calculate the book's acceleration, we can use Newton's second law of motion, which states that the force applied to an object is equal to the mass of the object multiplied by its acceleration (F = ma). In this situation, the book has a mass of 1 kg and there is a frictional force of 5 N acting against its motion. Therefore, we can rearrange the formula to solve for acceleration (a = F/m).

Using the given values:

Acceleration, a = Frictional force / Mass = 5 N / 1 kg = 5 m/s²

Since friction always opposes the motion, the book is slowing down, not speeding up. The negative sign indicates the direction of the acceleration is opposite to the direction of motion, which is to the left.

Answer 2

slowing down

Step-by-step explanation:

The force of friction always acts in opposite direction to the force applied for sliding the body .

If the applied force is F , the force of friction is 5 N .

Then the resultant force is ( F - 5 )

The acceleration = net force / mass

Thus acceleration= ( F - 5 )/1 = F - 5

Therefore , the applied force decreases , by which the acceleration als decreases . By which the body will slow down .